JP6839962B2 - Writing implements - Google Patents

Description

The present invention relates to a writing instrument characterized by a grip portion.

Conventionally, it has been known that a grip portion of a high-class writing instrument is made of a high-class material, lacquer, engraving, or the like, but the functionality of ease of grip and resistance to fatigue has not been imparted. Therefore, for example, Patent Document 1 discloses a writing tool having an outer surface made of a non-rubber-based hard material such as metal, but having a grip portion suitable for various gripping methods of a user.

Japanese Unexamined Patent Publication No. 2016-020074

In the writing tool described in Patent Document 1, a hard ring-shaped member is arranged on the outer circumference of the shaft cylinder constituting the grip portion, and an elastic member is provided between the shaft cylinder and the ring-shaped member to form a finger shape. One end of the ring-shaped member moves inward in the radial direction along the line, and the grip portion is deformed. However, since the other end of the ring-shaped member protrudes outward in the radial direction, the grip portion does not always fit the finger.

Therefore, an object of the present invention is to provide a writing tool having a grip portion that not only has a high-class feeling due to a hard exterior portion and elasticity due to an elastic body but also has an improved fit to a finger.

In order to achieve the above-mentioned object, according to the first aspect of the present invention, it is a writing instrument having a characteristic grip portion, and is a hard shaft cylinder in which a plurality of grooves are formed in the radial direction about the axis of the writing instrument. And a hard piece member arranged in each of the grooves, and an elastic body arranged between the bottom surface of the groove portion and the bottom surface of the piece member and enabling the movement of the piece member in the radial direction of the writing instrument. Provided is a writing instrument having a grip portion having a recess and having a recess on at least one of a bottom surface of the groove portion and a bottom surface of a piece member .

According to the present invention, it is possible to provide a writing tool having a grip portion that not only has a high-class feeling due to a hard exterior portion and elasticity due to an elastic body but also has an improved fit to a finger.

It is a side view of the writing instrument in 1st Embodiment of this invention. It is a vertical sectional view of the writing instrument in the 1st Embodiment of this invention. It is a perspective view of the shaft cylinder (grip shaft) in the 1st Embodiment of this invention. It is a perspective view of the piece member attached to the shaft cylinder in the 1st Embodiment of this invention. It is a perspective view of the piece member attached to the shaft cylinder in the 1st Embodiment of this invention. It is a perspective view of the elastic body arranged in the shaft cylinder in the 1st Embodiment of this invention. It is a perspective view of the grip part in 1st Embodiment of this invention. It is a cross-sectional view of the grip portion along the line VII-VII of FIG. It is a perspective view of the piece member in the 2nd Embodiment of this invention. It is a side view of the grip part in the 2nd Embodiment of this invention. 9 is a cross-sectional view of the grip portion along the line IX-IX of FIG. 9A. It is a perspective view of a piece member and an elastic body in 3rd Embodiment of this invention. It is a perspective view of the grip part in 3rd Embodiment of this invention. It is a cross-sectional view of the grip portion along the line XII-XII of FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In each drawing, similar components are given similar reference numerals. The contents described below do not limit the technical scope of the invention and the meanings of the terms described in the claims.

FIG. 1 is a side view of the writing tool 1 according to the first embodiment. In the present embodiment, the knock-type mechanical pencil will be described as an example of the writing instrument 1, but it should be noted that the present invention is not limited to the mechanical pencil and can be applied to a ballpoint pen and other pens. In this specification, the front end side of the writing instrument is defined as "front" in the axial direction A, the rear end side of the writing instrument is defined as "rear", and the outer side of the writing instrument is defined as "outside" in the radial direction B. The inside of the writing instrument is defined as "inside".

First, the overall configuration of the writing tool 1 will be outlined. As shown in FIG. 1, the writing instrument 1 generally includes a writing unit 10 that sends out a core to enable writing, a grip portion 20 that is gripped by a finger, and a shaft portion 30 that is located behind the grip portion 20. It has an operation unit 40 for performing a centering operation.

FIG. 2 is a vertical cross-sectional view of the writing tool 1 according to the first embodiment. The writing unit 10 includes a guide pipe 11 that protects the core, a mouthpiece 12 that covers the tip of the writing instrument 1, a core return stopper 13 that is arranged behind the guide pipe 11 to prevent core return, and a core return stopper 13. A core chuck 14 that is arranged behind the core and sends out the core, a spring 15 that enables the core chuck 14 to move in the axial direction A, a core guide 16 that sends the core to the core chuck 14 one by one, and a core. It has a core tank 17 that is arranged behind the guide 16 and stores the core.

The grip portion 20 includes a front shaft 21 that is screwed into the base 12, a grip shaft 22 that covers the outside of the front shaft 21 in the radial direction B, a plurality of piece members 56, 57 mounted on the grip shaft 22, and a grip shaft. It has an elastic body 24 arranged between the 22 and the piece members 56 and 57.

The shaft portion 30 includes a shaft decoration 31 located behind the gripping shaft 22, a shaft decoration receiving portion 32 for receiving the shaft decoration 31, a shaft joint 33 fixed to the rear end portion of the front shaft 21, and a shaft joint 33. It has a rear shaft 34 screwed into the rear shaft 34, and an outer shaft 36 located outside the rear shaft 34 in the radial direction B and having a clip 35.

The operation unit 40 has a knock portion 41 that engages with a protrusion 38 formed on the inner surface of the rear shaft 34 and receives the rear end of the core tank 17, and a knock portion 41 that is screwed onto the rear end of the rear shaft 34. It has a locking ring 42 for locking, a spring 43 for allowing the knock portion 41 to move in the axial direction A, an eraser 44 inserted into the recess of the knock portion 41, and a knock cover 45 for covering the eraser 44. ..

In the present specification, the shaft including the front shaft 21, the gripping shaft 22, the rear shaft 34, and the outer shaft 36 described above is referred to as a “shaft 50”. In another embodiment, the front shaft 21, the gripping shaft 22, the rear shaft 34, and the outer shaft 36 may be integrally formed, in which case the shaft cylinder 50 is formed as a single body.

Subsequently, the configuration of the grip portion 20, which is a feature portion of the present invention, will be described in detail. 3 to 5 show the constituent members of the grip portion 20. FIG. 3 is a perspective view of the barrel 50 (grasping shaft 22). The shaft cylinder 50 is made of a metal such as aluminum, a non-rubber plastic (excluding elastic materials such as rubber and elastomer), a hard material including wood, glass, jewelry and the like, and is extruded, injection molded or cut. Is formed by. The shaft cylinder 50 has a coating film formed by a sprayer, vacuum vapor deposition, or the like, and is colored or glossed.

Six groove portions 51 are formed on the outer surface of the barrel 50 in the radial direction B about the axis X. The groove portions 51 extend linearly along the axial direction A and are arranged at equal intervals in the circumferential direction C. In another embodiment, five groove portions 51 may be formed along the axial direction A corresponding to the piece members 56 and 57.

The groove portion 51 has a narrow portion 52 formed on the outer side of the barrel 50 and a wide portion 53 adjacent to the inner side of the narrow portion 52 in the radial direction B. The narrow portion 52 prevents the piece members 56 and 57 from coming out of the barrel 50 outward in the radial direction B. The wide portion 53 limits the range of movement of the piece members 56 and 57 in the radial direction B. A recess 55 that receives the elastic body 24 is formed on the bottom surface 54 of the groove 51. The recessed portion 55 substantially fixes the position of the elastic body 24 in the grooved portion 51.

4A and 4B are perspective views of the piece members 56 and 57 mounted on the barrel 50. The piece members 56 and 57 are extruded or injection molded using a metal such as aluminum, a non-rubber plastic (excluding elastic materials such as rubber and elastomer), a hard material including wood, glass, jewelry and the like. Or it is formed by cutting or the like. By forming the barrel 50 and the piece members 56, 57 constituting the exterior portion of the grip portion 20 with a hard material, the writing tool 1 is given a high-class feeling. The hard material used for the piece members 56 and 57 may be the same material as the hard material used for the barrel 50, or may be a different material. The piece members 56 and 57 have a film formed by a sprayer, vacuum vapor deposition, or the like, and are colored or glossed.

One piece member 56 is arranged on the tip side of the writing instrument in the groove 51 shown in FIG. 3, while four piece members 57 are arranged behind the piece member 56. The piece member 56 has an inclined surface 60 so as to exhibit a continuous shape to the tapered base 12 shown in FIG. In another embodiment, the piece member 56 does not have an inclined surface 60 and may have the same shape as the piece member 57. The piece members 56, 57 are a leg portion 58 arranged in the narrow portion 52 of the groove portion 51 shown in FIG. 3, and a retaining piece extending from the leg portion 58 to both sides and arranged in the wide portion 53 of the groove portion 51. It has a part 59 and.

A recess 62 for receiving the elastic body 24 is formed on the bottom surface 61 of the piece members 56 and 57. The recess 62 substantially fixes the position of the elastic body 24 in the groove 51 shown in FIG. In another embodiment, the piece members 56, 57 may not have the recess 62, while the groove 51 may have the recess 55. Alternatively, the piece members 56, 57 may have the recess 62, while the groove 51 may not have the recess 55. In other words, since at least one of the piece members 56, 57 and the groove 51 has a recess, the position of the elastic body 24 in the groove 51 can be substantially fixed.

FIG. 5 is a perspective view of the elastic body 24 arranged on the barrel 50. The elastic body 24 is formed by using an elastic soft material such as rubber or an elastomer, and enables the piece members 56 and 57 to move in the radial direction B. In another embodiment, the elastic body 24 may be a spring or the like that repels in the radial direction B. The elastic body 24 has a rectangular parallelepiped shape extending along the axial direction A. Alternatively, the elastic body 24 may have a cylindrical shape extending along the axial direction A. Each of the elastic bodies 24 may be colored with a single color, or may be color-coded with a plurality of colors for the user's interest.

FIG. 6 is a perspective view of the grip portion 20 in the present embodiment. Although the grip portion 20 is not limited, first, the elastic body 24 is inserted into the groove portion 51 of the barrel 50, and then the piece members 56, 57 are inserted into the groove portion 51 so as to cover the elastic body 24. Assembled by. The elastic body 24 and the piece members 56 and 57 are arranged in each of the groove portions 51. In each of the groove portions 51, a total of five piece members including one piece member 56 and four piece members 57 are arranged in series in the axial direction A. Of the five piece members 56 and 57 arranged in series in the axial direction A, only the piece members that come into contact with the fingers are urged inward in the radial direction B, so that the deformation of the grip portion 20 is minimized. The fit to the fingers is improved.

In another embodiment, the five piece members 56, 57 arranged in series in the axial direction A may be integrally formed by being connected by a hinge or the like. By integrally molding the piece members 56 and 57, the manufacturing cost is reduced and the piece members 56 and 57 can be easily incorporated into the groove 51.

FIG. 7 is a cross-sectional view of the grip portion 20 along the line VII-VII of FIG. An elastic body 24 is arranged between the bottom surface 54 of the groove 51 and the bottom surface 61 of the piece member 57. The elastic body 24 enables the piece member 57 to move in the radial direction B, the piece member 57 is urged inward in the radial direction B in response to the pressing by the finger, and the piece member 57 is radially in response to the release of the finger. Restore to the outside of B. Of the six piece members 57 arranged at equal intervals in the circumferential direction C, only the piece members that come into contact with the fingers are urged inward in the radial direction B, so that the deformation of the grip portion 20 is minimized. , The fit to the fingers is further improved.

Next, the writing tool in the second embodiment will be described with reference to FIGS. 8 and 9. Since the overall configuration of the writing instrument in the second embodiment is the same as the overall configuration of the writing instrument 1 in the first embodiment, the description thereof will be omitted. The grip portion of the writing instrument in the second embodiment is different from the configuration of the grip portion 20 of the writing instrument 1 in the first embodiment in that the shape of the piece member 71 is different.

FIG. 8 is a perspective view of the piece member 71 according to the second embodiment. The piece member 71 has not only the leg portion 72 and the retaining portion 73, but also the armor portion 74 extending from the leg portion 72 to both sides.

FIG. 9A is a side view of the grip portion 70 in the second embodiment. Similar to the first embodiment, the grip portion 70 has five piece members 71 in series in the axial direction A. The armor portion 74 of the piece member 71 is sized so as to substantially constitute the entire outer surface of the grip portion 70.

9B is a cross-sectional view of the grip portion 70 along the line IX-IX of FIG. 9A. The grip portion 70 has six piece members 71 separated by a gap 75 in the circumferential direction C. The gap 75 is sized as a play so that two adjacent piece members 71 do not come into contact with each other when pressed inward in the radial direction B. Similar to the first embodiment, the leg portion 72 of the piece member 71 is arranged in the narrow portion 77 of the shaft cylinder 76, while the retaining portion 73 of the piece member 71 is arranged in the wide portion 78 of the shaft cylinder 76. Will be done. Although the armor portion 74 of the piece member 71 has a gap 75 between it and the armor portion 74 of the adjacent piece member 71 in the circumferential direction C, it generally covers the entire outer surface of the shaft cylinder 76. As a result, the finger always comes into contact with one of the piece members 71, so that the fit to the finger is further improved.

Subsequently, the writing tool according to the third embodiment will be described with reference to FIGS. 10 to 12. Since the overall configuration of the writing instrument in the third embodiment is the same as the overall configuration of the writing instrument 1 in the first embodiment, the description thereof will be omitted. The grip portion of the writing instrument in the third embodiment is different from the configuration of the grip portion 20 in the first embodiment in that the elastic body 82 is integrated with the piece member 81.

FIG. 10 is a perspective view of the piece member 81 and the elastic body 82 in the third embodiment. The piece member 81 and the elastic body 82 are integrated by double molding (two-color molding or molding of different materials) or an adhesive, and the elastic body 82 is fixed to the bottom surface 83 of the piece member 81. This makes it easier to incorporate the piece member 81 and the elastic body 82 into the shaft cylinder. The piece member 81 and the elastic body 82 are preferably colored in different colors so as to be interesting to the user. The length of the elastic body 82 in the axial direction A is substantially the same as that of the piece member 81 or shorter than that of the piece member 81. As a result, a plurality of piece members 81 can be arranged in series without a gap in the groove portion of the barrel. The piece member 81 has a leg portion 84 that is pressed by a finger, and a retaining portion 85 that extends from the leg portion 84 to both sides.

FIG. 11 is a perspective view of the grip portion 80 according to the third embodiment. The grip portion 80 includes a shaft cylinder 50 having substantially the same shape as that of the first embodiment, and a piece member 81 integrated with the elastic body 82. The grip portion 80 can be assembled by simply inserting five piece members 81 integrated with the elastic body 82 in series into each groove portion 51 of the barrel 50. In the first embodiment, when the piece member is inserted into the groove 51 of the barrel 50, the elastic body arranged in advance is likely to be displaced, but in the third embodiment, the piece member 81 is Since it is integrated with the elastic body 82, it can be easily inserted into the groove 51 of the barrel 50. Then, of the five piece members 81 arranged in series in the axial direction A, only the piece members that come into contact with the fingers are urged inward in the radial direction B, so that the deformation of the grip portion 80 is minimized. The fit to the fingers is improved.

FIG. 12 is a cross-sectional view of the grip portion 80 along the line XII-XII of FIG. An elastic body 82 integrated with the piece member 81 is arranged between the bottom surface 54 of the groove 51 and the bottom surface 83 of the piece member 81. Further, since the elastic body 82 is arranged in the recess 55 formed in the bottom surface 54 of the groove 51, the position of the elastic body 82 in the groove 51 is substantially fixed. The elastic body 82 enables the piece member 81 to move in the radial direction B, the piece member 81 is urged inward in the radial direction B in response to pressing by a finger, and the piece member 81 has a diameter in response to the release of the finger. Restore to the outside of direction B. Of the six piece members 81 arranged at equal intervals in the circumferential direction C, only the piece members that come into contact with the fingers are urged inward in the radial direction B, so that the deformation of the grip portion 80 is minimized. , The fit to the fingers is further improved.

Although various embodiments have been described herein, the present invention is not limited to the various embodiments described above, and various modifications can be made within the scope of the claims described below. Please be recognized.

1 Writing tool 20, 70, 80 Grip parts 24, 82 Elastic body 50, 76 Shaft cylinder 51 Grooves 52, 77 Narrow parts 53, 78 Wide parts 55, 62 Recesses 56, 57, 71, 81 Piece members 58, 72 Legs 59, 73 retaining part A Axial direction B Radial direction X Axial line

Claims (1)

A writing instrument having a characteristic grip portion, which is a hard shaft cylinder in which a plurality of grooves are formed in the radial direction about the axis of the writing instrument, a hard piece member arranged in each of the grooves, and the groove. A grip portion having an elastic body arranged between the bottom surface of the piece and the bottom surface of the piece member and enabling the movement of the piece member in the radial direction of the writing instrument is provided , and the bottom surface of the groove portion and the piece member are provided. A writing instrument that has a recess on at least one side of the bottom surface of the writing instrument.

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